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<DIV><SPAN style="FONT-FAMILY: 'Calibri','sans-serif'">Vabim vas na 5.
predavanje iz sklopa "Kolokviji na IJS" v letu 2007/08, ki bo <SPAN
style="COLOR: red">v sredo, 7. novembra, ob 13:00 uri v Veliki predavalnici
Instituta »Jožef Stefan«</SPAN> na Jamovi cesti 39 v Ljubljani. Napovednik
predavanja najdete tudi na naslovu <A
href="http://www.ijs.si/ijsw/Koledar_prireditev">http://www.ijs.si/ijsw/Koledar_prireditev</A>,
posnetke preteklih predavanj<SPAN style="COLOR: blue"> </SPAN>pa na <A
href="http://videolectures.net/kolokviji_ijs">http://videolectures.net/kolokviji_ijs</A>.<o:p></o:p></SPAN></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<BR><BR><STRONG><FONT
size=4>Prof. dr. Mladen Horvatić</FONT></STRONG><STRONG><FONT size=4>:<BR><SPAN
style="FONT-SIZE: 16pt; FONT-FAMILY: 'Times New Roman'; mso-ansi-language: SL"></SPAN></FONT></STRONG></SPAN></P>
<P class=MsoNormal align=left><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'"><SPAN
style="FONT-SIZE: 16pt; FONT-FAMILY: 'Times New Roman'; mso-ansi-language: SL"><STRONG>Raziskave
v zelo visokih magnetnih poljih: JMR eksotičnih kvantnih spinskih
stanj</STRONG></SPAN></SPAN></P>
<P class=MsoNormal align=left><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'"><SPAN
style="FONT-SIZE: 16pt; FONT-FAMILY: 'Times New Roman'; mso-ansi-language: SL"><STRONG></STRONG></SPAN></SPAN> </P>
<P class=MsoNormal align=justify><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'"><SPAN
style="FONT-SIZE: 16pt; FONT-FAMILY: 'Times New Roman'; mso-ansi-language: SL"><FONT
size=3>V uvodu bomo povzeli raziskave, ki jih opravljamo v Laboratoriju za
visoka magnetna polja v Grenoblu (High Magnetic Field Laboratory - GHMFL), še
posebej pa bodo predstavljene aktivnosti v okviru jedrske magnetne resonance
(JMR) v visokih magnetnih poljih. V nadaljevanju bodo podrobneje prikazani
rezultati na nekaterih nizko-dimenzionalnih, kvantnih ter antiferomagnetnih
sistemih. Za uvodni zgled bomo opisali "Shastry-Sutherland" sistem SrCu2(BO3)2,
kjer smo z uporabo JMR v visokih magnetnih poljih razložili pojav značilnih
magnetizacijskih platojev kot posledico kristalizacije tripletnih ekscitacij v
komenzurabilno super-mrežo. Dotaknili se bomo tudi najnovejših rezultatov
izmerjenih na magnetnem osnovnem stanju pri poljih nad 1/8 platojem (t.j. nad
28.4 T). Za drugi zgled pa si bomo vzeli "Han purple" sistem, BaCuSi2O6, kjer
pride do (2D) Bose-Einsteinove kondenzacije tripletnih ekscitacij nad 23.35 T.
Komplicirani fazni diagram, ki smo ga določili z JMR v visokih magnetnih poljih,
kaže na prisotnost faze, kjer je bozonska gostota kondenzata močno modulirana v
smeri pravokotni na ravnine.</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center"
align=center><SPAN
style="FONT-SIZE: 16pt; FONT-FAMILY: 'Times New Roman'; mso-ansi-language: SL"><o:p><STRONG></STRONG></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; WORD-BREAK: break-all; TEXT-ALIGN: center"
align=justify><SUP><SPAN
style="FONT-FAMILY: 'Times New Roman'; mso-ansi-language: SL; mso-fareast-font-family: 'MS Gothic'"><o:p><FONT
size=3><STRONG> </STRONG></FONT></o:p></SPAN></SUP></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; WORD-BREAK: break-all; TEXT-ALIGN: center"
align=left><FONT size=3><SPAN lang=EN-US
style="FONT-FAMILY: 'Times New Roman'"><SPAN
style="mso-spacerun: yes"> </SPAN><SPAN
style="mso-spacerun: yes"> </SPAN></SPAN></FONT></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'">Predavanje bo v
angleščini.<BR><BR></SPAN></P><PRE><A href="http://ghmfl.grenoble.cnrs.fr/totaleResearch.htm"><FONT color=#0000ff>http://ghmfl.grenoble.cnrs.fr/totaleResearch.htm</FONT></A></PRE><PRE> </PRE>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri','sans-serif'"><SPAN
style="FONT-FAMILY: 'Times New Roman'; mso-ansi-language: SL; mso-fareast-font-family: 'MS Gothic'"><EM>Grenoble
High Magnetic Field Laboratory, </EM></SPAN></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri','sans-serif'"><SPAN
style="FONT-FAMILY: 'Times New Roman'; mso-ansi-language: SL; mso-fareast-font-family: 'MS Gothic'"><EM>Grenoble,
Francija</EM></SPAN></SPAN></P><PRE><SPAN style="FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></PRE>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri','sans-serif'"><BR><FONT
size=3><FONT color=#ff0000><STRONG>Lepo
vabljeni!<o:p></o:p></STRONG></FONT></FONT></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><o:p> </o:p></P></DIV></BODY></HTML>